Display dict of namedtuples

fire/core.py

@@ -351,6 +351,9 @@ def _OneLineResult(result):
   if inspect.ismodule(result):
     return f'<module {result.__name__}>'
 
+  if inspectutils.IsNamedTuple(result):
+    return json.dumps(result._asdict(), ensure_ascii=False)
+
   try:
     # Don't force conversion to ascii.
     return json.dumps(result, ensure_ascii=False)

fire/core_test.py

@@ -14,6 +14,7 @@
 
 """Tests for the core module."""
 
+import collections
 from unittest import mock
 
 from fire import core
@@ -137,6 +138,12 @@ def testPrintOrderedDict(self):
     with self.assertOutputMatches(stdout='{}'):
       core.Fire(tc.OrderedDictionary, command=['empty'])
 
+  def testPrintDictOfNamedTuples(self):
+    point = collections.namedtuple('Point', ['x', 'y'])
+    data = {'a': point(1, 2), 'b': point(3, 4)}
+    with self.assertOutputMatches(stdout=r'a:\s+\{"x": 1, "y": 2\}', stderr=None):
+      core.Fire(data, command=[])
+
   def testPrintNamedTupleField(self):
     with self.assertOutputMatches(stdout='11', stderr=None):
       core.Fire(tc.NamedTuple, command=['point', 'x'])

fire/value_types.py

@@ -50,7 +50,8 @@ def IsSimpleGroup(component):
   """
   assert isinstance(component, dict)
   for unused_key, value in component.items():
-    if not IsValue(value) and not isinstance(value, (list, dict)):
+    if (not IsValue(value) and not isinstance(value, (list, dict))
+        and not inspectutils.IsNamedTuple(value)):
       return False
   return True